I got some great feedback and ideas from the initial release. Thanks everyone! Please leave feedback here, and as usual feel free to tell me what you love, hate, or would like to see. Thanks!

New Features

• Print After Processing - This allows either automatic or manually processed files to be printed after processing is completed. This should help people wanting to start prints directly from their slicer. Currently there is no option to enable this only for remote upload, because I've not found any way to detect that. Solves issues #43, #39 and #36.
• Select After Processing - Allows Arc Welder to select the most recently completed file if possible. This solves #49, as reported in the feedback thread for 1.0.0.
• Disable Arc Welder Button While Printing - Prevents manual processing from the file manager while a print is running. Solves #50.
• Current Run Configuration is Now Collapsible - Lets you show and hide the current settings within the Arc Welder tab. Your selection is stored within the browser so your setting is remembered. Solves #54.

Enhancements

• Prevent Adding Files Twice - Arc Welder will now reject any files that are either currently processing, or are queued for processing. Solves #51.
• Cancel and Re-Queue If Printing Starts - If you start a print while a file is processing, Arc Welder will cancel processing (after a few seconds), and will re-queue the file so that it starts after printing is complete. Solves #53 and #46.
• Safety Features Added to Print After Processing - If you are using the new Print After Processing option, Arc Welder will ignore this option if a print is started after processing begins. This includes prints started by Arc Welder. This keeps Arc Welder from starting a print immediately after another finishes.
• Prevent Automatic Processing When Files Are Moved - In the last version of Arc Welder moving a file triggered automatic processing. Since OctoPrint has no FileMoved event, this was a bit sketchy to implement. I think it should work in almost every case, but I'm planning to request a FileMoved event that happens before FileRemoved and FileAdded. Solves #45.

Known Issues (all old)

• There are problems compiling for some flavors of Linux and Max OS.
• It is possible for a race condition to prevent proper thumbnail extraction, but this should only be possible for the smallest GCode files.